Vacuum-valve.



A. DES ROCHER. vAcuumvALvE.

APPLICATION FILED JULY 6. l9 l4 Patented J une 20, 19M.

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ALEXANDER nns nocnnn, or nn'rnoi'r, inrerrrsaiv.l

VACUUM-VALVE.

. America, residing at Detroit, in the county 5 of Wayne and State of Michigan, have in-f vented certain new and useful lmprovements in Vacuum-Valves, of which the ollowing is a specification, reference being had therein to the accompanying drawings.

rlhis invention relates to a vacuum valve, and the primary .object of my invention is to provide a diaphragm actuated valve wherein simple and effective means are employed `for regulating the action of the diaphragm, and wherein a partial vacuum controlsthe pressure of water or motive fluid employedor producing a partial/ or complete vacuum. l

provide anovel vacuum controlled device that can be advantageously used in connection with heating systems andfor removing air from pipe lines and suchl structures where the presence of air is considered a detriment to the operation of a system or apparatus.

I attain the above and other results by a simple, durable inexpensive mechanical cnstruction that will be hereinafter specifically described and then claimed, and reference will now be had to the -drawing wherein there is illustrated a vertical sectional view of a vacuum valve in accordance with this invention. i

lln the drawing, l'denotes, by the way 'of an example, la vacuum- 'pipe or conduit adapted to form part of a heating system or' a similar apparatus, and such pipe has ,a four-way connection 2. Alining'with 'the vacuum pipe 1 are pipes 3 and 4 connected by` a conventional form ofcheck valve 5.

The pipe 3 isv connected to the four-way connection 2 and the pipe 4 is connected tol a spherical ejector casing l6 having a 'ldischarge pipe` 7 Alining with thek discharge pipe 7 is an ejector nozzle '8.form1ng'. part of the casing-6 vand eX-tendinggthereln to discharge: water or a motive Afluid into the pipe and produce ,a suction .or vacuum in the pipes 4.-,-3vand 1. rlhe eJector casing 6 is connected by a pipe 9 to a sectional fy'spherical strainer casing 1 0 and between the sections of said casing 1s a strainer or A further object of this invention is to specification of Letters Patent. Pmbnlmedl Jun@ gw, 2:1916, Applica-non mea July c, ma seal No. 849,357.

sieve 11. This strainer or sieve prevents solid and foreign matter from being discharged-into-the pipe 9 and the nozzle 8.

The strainer casing 10. is connected by pipes 12 and an elbow 134 to a valve body 14:. The valve body may be of the gate, globe or any other suitable type which has a vvalvular member 15 controlling the passage through the valve body. The valve body has an inlet pipe 16 for water or mo'- tive fluid, and the valvular member 15 is carried by a stem 17, extending through a stuffing box 18, in the directionof the fourway connection 2. The valve stem 17 eX-v by top, and bottom plates 22 land nuts or washers 2 3. The topand bottom plates 22 are of smaller area than the diaphragm 21 and the top of the diaphragm casing has a port 24 whereby air will be admitted to.

the upper part thereof.

The four-way connection 2 has a'closed end 25 and adjustably mounted in this endI ofthe four-way connection is a screw 26. The outer end of the screw terminates in a shank 27 and is provided with a jam or lock nut 28 whereby lthe screw can be secured in adjusted position. The inner end of the screw 26. has a cup shaped head 29 to receive an end convolution of a coiled compression spring arranged within the four-way connection 2 and the pipe 20. The coiled compression spring eXteIds into the diaphragm casing; 19, encircling the end of the valve stem 17, andengaging the nuts or washers 23v at the bottom side of the diaphragm 21. The expansion force of the spring 30 is suliicient to retain the valvular member 15 in an open position; consequently, there is a supply o water or motive fluid to the ejector nozzle 8 and as the water is discharged from said nozzle a vacuum or suction is produced in the pipes 1, .3 and 4; The check valve is openedv and the withdrawal of air from the pipe continues until the vacuum overcomes ,be reduced or completely `sllutofr, The

check valve' closes andi l prevents water or 'motive fluid trom passing `inta` r1;}1=,'.pip@s 1 a,nd3.' if.: e l,

I attachconsiderableimportance to the screw26empl'oyed' for regulatingfthe tension ofthe spring30, .as itis through the medium'of said screw andsaid `spring that the operation 'of the ldevice can 'be' `controlled and timed whereby ya predetermined degree.

of suction or rvacuum will. actuate thevalvulail member 15, which controls the supply of l'water or motive fluid to the ejector.

In practice, it is preferable to use a gate Valve vwhereby the valve can be opened and closed against-pressure of-.a motive fluid,

and it hasbeenfo'u'nd that lheating systems having `a poqr clrculationcan be brought up to the standard and the eiiic'iencyof the sysj tem materially-increased byinstalling one of the devices. After such' installation,. it is only necessary to regulatethe screw 26 until a proper circulationof hot'wate has been indicated and'from then on the action of the device is automatic,

One embodiment of my invention has bee l illustrated, but it is to beundeistood that the structural elements 'are susceptible to -phragm 1121;: and .valvular member 15v is yclosed .or partially'.v CIOSQd fwherebyA the y:supply of water tothe ejectorlnozzle 8'wil1.

l`ried thereby, an ejector in'communication 1 Awith said pipe at one end thereof and adapted toreceive motive Iiuid to produce a suction in said pipe, a valve in communication with said -ejector for controllin the supply of motive fluid thereto and having a depending valve stem, a diaphragm casing v supported by said four-way connection between said connection and said valve and in commumcatlon with sald connection, a-dla- 'phragm within said casing an'd connected to the valve stem of' said valveand adapted to open and close said valve, a spring within said four-way connection and extending vtherethrouf'gh and into said casing and adapted to maintain said valve open during `the reduction of the vacuum in said pipe,

and means carried by said four-way connection for adjusting said means.

In testimony whereof I aix my signature in presence of twowitnesses.

ALEXANDER DEs RCHR.

Witnesses: v

Orro F. BARTHEL, ANNA M. Dolm.l

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